In response to the IGBT turn off overvoltage and oscillation problems in the variable frequency speed regulation system of electric vehicles,this article analyzes the advantages and disadvantages of overvoltage suppression schemes based on in-depth research on the mechanism of overvoltage generation,and proposes a new type of overvoltage suppression protection circuit scheme.The simulation results show that IGBT protection circuit can effectively suppress overvoltage in electric vehicle variable frequency speed regulation,play a good protective role,and thus improve the stability of electric vehicle variable frequency speed regulation system.
关键词
电动汽车/变频调速系统/IGBT/过电压抑制
Key words
electric vehicles/variable frequency speed regulation system/IGBT/overvoltage suppression
维普
万方数据